libs/sgi-wsapi/luasrc/sgi/wsapi.lua

   1 --[[
   2 LuCI - SGI-Module for WSAPI
   3
   4 Description:
   5 Server Gateway Interface for WSAPI
   6
   7 FileId:
   8 $Id$
   9
  10 License:
  11 Copyright 2008 Steven Barth <steven@midlink.org>
  12
  13 Licensed under the Apache License, Version 2.0 (the "License");
  14 you may not use this file except in compliance with the License.
  15 You may obtain a copy of the License at
  16
  17         http://www.apache.org/licenses/LICENSE-2.0
  18
  19 Unless required by applicable law or agreed to in writing, software
  20 distributed under the License is distributed on an "AS IS" BASIS,
  21 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  22 See the License for the specific language governing permissions and
  23 limitations under the License.
  24
  25 ]]--
  26 module("luci.sgi.wsapi", package.seeall)
  27 require("ltn12")
  28 require("luci.http")
  29 require("luci.dispatcher")
  30 require("luci.http.protocol")
  31
  32 function run(wsapi_env)
  33         local r = luci.http.Request(
  34                 wsapi_env,
  35                 ltn12.source.file(wsapi_env.input),
  36                 ltn12.sink.file(wsapi_env.error)
  37         )
  38
  39         local res, id, data1, data2 = true, 0, nil, nil
  40         local headers = {}
  41         local status = 200
  42
  43         local x = coroutine.create(luci.dispatcher.httpdispatch)
  44         while id < 3 do
  45                 res, id, data1, data2 = coroutine.resume(x, r)
  46
  47                 if not res then
  48                         status = 500
  49                         headers["Content-Type"] = "text/plain"
  50                         local err = {id}
  51                         return status, headers, function() local x = table.remove(err) return x end
  52                 end
  53
  54                 if id == 1 then
  55                         status = data1
  56                 elseif id == 2 then
  57                         headers[data1] = data2
  58                 end
  59         end
  60
  61         local function iter()
  62                 local res, id, data1, data2 = coroutine.resume(x)
  63                 if not res or id == 5 then
  64                         return nil
  65                 else
  66                         return data1
  67                 end
  68         end
  69
  70         return status, headers, iter
  71 end